Home / 716,606.63-988,887.46-389,921.00

Finding the Fourth Proportional to 716,606.63, 988,887.46 and 389,921.00

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Solution

The fourth proportional to 716,606.63, 988,887.46 and 389,921.00 is: 538,074.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,606.63 : 988,887.46 = 389,921.00 : x
  2. Step 2: Convert to fraction form
    716,606.63/988,887.46 = 389,921.00/x
  3. Step 3: Cross multiply
    716,606.63x = 988,887.46 × 389,921.00
  4. Step 4: Simplify right side
    716,606.63x = 385,587,981,371.42
  5. Step 5: Solve for x
    x = 385,587,981,371.42/716,606.63
  6. Step 6: Final answer
    x = 538,074.82

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.